Add pulses at the bottom of your sumo squat to target glutes and inner thighs.
Start in second position, with your legs opened wide to the sides and your toes turned slightly outward. Placing your hands on your hips, bend your knees, going as low as you can. Make sure your shoulders remain directly over your hips and your knees are in line with your feet.
While holding second position, make small pulses up and down, moving about an inch. Do two sets to three sets of 20 pulsing reps.